Question

4. How far apart should the two electrons be, if the
force each exerts on the other is equal to the weight
of the electron ? Given that e = 1.6 x 10-9 C and
m = 9.1 x 10 kg.


​

Answer 1

weight of electron is equal to 9.1×10^-30 N

W = ke²/r²

r² = 9*10^9*1.6*1.6*10^-8/9.1

distance aur is nearly equal to 5 metres